Service-outlet fitting for pneumatic cleaning systems.



W. S. SUTTON. SERVICE oUTLET FITTING Eon PNEUMATIG CLEANING SYSTEMS.

PPLIOATION FILED AUG. 25, 1913. v

1,096,278. PatentedMay 12,1914.V

. a citizen of the United States, residing at UNITED STATES .PATENT OFFICE. l WILLIAn s. sU'rroN, ori-nocixronnimmors. AssIGnoE 4ro AMEEICAE aanleren coureur, 0E omesso, IEEINoIs, coni-cannon or NEW JERSEY; A

,SERVICE-OUTLET me Eon ENEUMATIC cLEArime SYSTEMS.

l'To all whom t may concern:

Be it known that I, WILLIAM S. SUTTON,

Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Service-Outlet' Fittings for Pneumatic Cleaning Systems, of which the following is a specification.

My invention relates to service outlet fittings for pneumatic cleaning'systems, and particularly to improved coupling mechanism for locking the ends of the lead pipes from pneumatic cleaning devices into service position in service pipe outlet fittings.

In pneumatic cleaning systems for buildings, service pipes are vusually run to the -various' floors or rooms and outlet fittings provided for such'device for receiving the, ends of the lead pipes of the pneumatic cleaning devices to connect such devices for service. During operation of the cleaning device and the back and forth movement of thelead pipe or hose, the connection be-l` tween the lead pipe and the service pipe f1ttings is apt to loosen to allow leakage and consequent ineflicient operation of the cleaning device. It is therefore very desirable that connection may be made readily with the service outlet without great` exertion on the part of the operator and that disconnection may as readily be made, but at the same time air-tight connection should be maintained to prevent leakage.

One of the important objects of my inven-A tion is therefore to provide coupling means which will enable connection to be readily and easily made with a service pipe outlet 'and .which will make and lmaintain air-tight connection. p

Another object is to provide automatic operation of such coupling mechanism and toA utilize parts of the outlet fitting for con-v trolling the coupling.

My invention will be more readily understood by reference to the accompanying sheet of drawings in which- Figure l is a frontelevational view of an outlet fitting, Fig. 2 is a sectional view taken on plane 2 2, Fig. l, and Fig. 3 is a similar sectional view showingthe end of a. lead pipe in coupling engagement.

5 vrepresents the end of a service pipe forming part of a pneumatic cleaning system, this pipe terminating in the wall 6. The end of the pipe is internally threaded Speoication of Iietters Patent.

application ined august 2s, 1913. serial no. 7851,522.

i vratentea. M. y

ting against the flange 7 of the bushing.-

The outer end of the lit-ting. is in -the form of an escutcheon plate 10 secured by screws l1 agamst the inner face of the wall 6, the wall having the recess or pocket v12 for receiving y thehub part 9 and the flange 7 of the reducing bushing. rPhe iitting F has the pocket 13 concentric with sleeve 8 and of larger diameter in order to provide a valveseat 1li.k A closure plug structure P has the central passageway 15 for the valve stem 16 which carries at its endthe valve disk 17, thevleather washer 18 and the head 19, this head being of less diameter than the washer and valve disk to leave the annular seating surface 18', which surface is of substantially the same area as the valve seat 14. An arm 20 extends upwardly from the plug l? and has the inwardly extending lug 21. rilae escutcheon plate 10 has the opening 22 for receiving the arm and lug and has the annular shoulder 23 concentric with the pocket 13 for seating the outer flange p of the'plug.-

The outletiitting above described is particula-rly adaptable for vacuum cleaning systems, the valve 17 being drawn against `the for receiving. the lug 21, the pin 2 passing through theears and lugsto thereby pivot the plug structure for vertical swing. Through the base of the lug pocket 26 1s theconical'opening 28 leading to the valve pocket 13 and in this opening is seated a coupling ball 29. The inner end of the lug has the rounded cam surface 21 .which is atY away from the ball when Athe valve plug is fully closed or fully open,- but which engages with lthe ball when the valve plug is moved v from full open position toward horizontal position Aas illustrated zin Fig. 3, the 'ball being then forced downwardly through the opening 28. p

rihe lead from the cleaning devlces is usually-in the form of a hose. length h provided at-its end with a connecting pipe secseat 14 and its groove g is below the locking ball 29. During insertion of the pipe in the fitting the valve plug l3 is held in its uppermost position as indicated in dotted lines Fig. 3, in which position the cam 'surface 2l is in front of the ball and the ball is free to move upwardly to allow passage oi the ring fr through the 'pocket 13 and against thevalve seat lll. fitter the rin is in position the hall .will oi course dropinto the "groove g and the valve plug P is'then released and allowed to drop against the pipe as shown in Fig. 3. In this'position the suriac'e 2l will be against the hall and will hold the ball securely in the groove g to lock the pipe c to the outlet fitting and to maintain air-tight connection. When it is desired to disconnect the lead from the fitting, the pipe plug P is raised sudiciently to swing its cam surface 2l clear of the hall and the pipe is then withdrawn. Upon such withdrawal the plug is dropped and it tails into the pocket 13 and the valve disk 17' is drawn by the suction against the seat le and the outlet is then sealed. f

"lhe valve plug structure l? serves two functions, rst, its normal function of carrying thevalve 4mechanism for sealing the outlet, and second, it acts as a lever weight for the arm 2l to hold the cam surface 2l against the hall to maintain lirm coupling and locking engagement. The opening in the escutcheon plate l0 helow the plug pocket is to enable the insertion of a suitable implement helow the'plug flange p in order that the plug may he forcibly moved suflicientljv to withdraw the valve disk from its seat. After this releasing movementl the plug can he readily swung to open posiion.

l thus provide a very simple vet highly eilicient-loclring mechanism for maintaining airtight connection hetween cleaning applianceleads and service outlets.

il do not el course desire to he limited to the enact construction and arrangement shown and described as modiiications are no doubt possible which would come within the scope ci the invention.

l claim the following:

l. ln a service outlet tting lier pneumatic cleaning systems.. the cornhinaticn of an escutcheon part having a valve pocket, a sleeve communicating with said valve pocket and adapted for connection with a service pipe outlet a. valve plug pivoted to the esn incedere cutcheon part to swing into said valvet pocket, said escutcheon part having an opening extending radially to said .valve pocket, a ball seated in said opening to move toward or away from said pocket, and a cam lug on said valve lug adapted to force said ball toward sai pocket when said valve plug is in position intermediate its fully opened position and its closed position.

2. ln a service outlet fitting for pneumatic cleaning systems, the combination of a hub part having a pocket, a sleeve extending from said hub part and adapted for connection with a service outlet, a plug for said pocket having an arm extending therefrom, lugs on said hub part, said 'plug arm extending between said lu s and apivot pin en tending through sai lugs and arm whereby said plu is pivoted to swing into or out ol said poc et, an opening through the huh part between said pocket and the space he-v tween said lugs, a hall seated in said opening, and an extension on said plug supporting arm adapted to prevent outward movenient oit said ball when said plug is iin/inten mediate'position. 1 i f 3. A service outlet fitting `for pneumatic cleaning systems comprising a here lor receiving the end of pneumatic appliance leads, an opening extending radially to said bore, a hall seated in said opening, an arm. pivoted to said tting and having an eirtensidn adapted in certain position ci said arm to ahnt against said loall t prevent outward radial movement thereon, said arm heing weighted.

d. lncomhination, a service outlet tting for pneumatic cleaning systemsy having a central hore, a lead pipe end tting in said here and having a collar, a loall seated in said fitting adapted to engage with said collara a plug for said fitting having a supporting arm extending therefrom, said arm heing pivot/ed wherehy said plug mav he swung out of the tting llore.y and a cam lug on said arm lor engaging with said hall when said plug is in intermediate position wherehjv said hall will he held aga-inst said lead pipe ring to loch said pipe to said litting.

ii.. ln comloination a service outlet :Fitting for pneumatic cleaning1 systems having a valve poclret and a sleeve lor connecting the fitting with a service pipe, a valve plug hav ing a supporting arm pivcted to the fitting 'wherehv the plug mav ne moved 'into the poclret to close the outlet or to he. swung out of the pocket, a lead pipe terminal inserted in said tting and having a locking collarY a radial opening in said iitting to valve pocket, a hall adapted to through said opening into said pochette engage with said ring, and a lug on said plug supporting arm adapted to engage with said hall to loclr said hall against outward radial movement lill lill

lll

vert-ical radial slot in said escutcheon Asaid extension 'to thereby allow vertical swing of t e valve and to retain said ball in engagement with the locking ring to prevent disconnection of the lead terminal from the tting.

d sleeve extending from said esutcheon part for connectlng such part with a service pipe outlet, a heavy circular valve plug for engaging in said pocket to close the outlet, a art above said valve pocket, an arm exten ing from said'valve plug for engaging in'said slot and having an inward extension, 'a pivot pin extending across said slot and receiving ivot said armto lug, a ball pocket at the lower end of said s ot having an opening communicating with the valve plug pocket, and a ball in said ball pocket for extending downwardly through said opening, said valve plug arm preventing escape of said ball from said pocket and the extension on said arm having a cam surface at its end for eoperating with said ball to release said ball when the valve plug is fully closed or is swungto its uppermost position and to look the ball to project downwardly through the ball pocket opening when said valve plug is in intermediate or substantially horizontal position.

In Witness whereof, I hereunto subscribe n my name this 21st day of August, A. D. 1913. l

- WILLIAM S.' SUTTON. Witnesses:

ROY H. BROWN, LOUISE LAWRENCE. 

